Is it dangerous to drive with a faulty impact sensor?

Yes, this can prevent airbags from deploying correctly (or deploying when they shouldn’t) in a collision — this is a serious safety issue and should be repaired immediately.

Is this a DIY-friendly repair?

No, given the direct connection to the airbag system, this should be handled by a qualified technician familiar with airbag safety procedures.

What is the sensor made of?

A compact accelerometer sensor in a sealed housing.

What is this part and what does it do?

Full description available in the product description section above. Contact us with clarifying questions.

How do I tell if my part is faulty?

See the 'Signs of a faulty part' section above or run a diagnostic at an auto service.

Yes - all our used parts are tested before sale and sold with guaranteed quality.

When should the part be replaced?

When warning signals appear, diagnostic codes are present, or the system malfunctions.

Airbag impact sensor VW POLO 2011

Name: Airbag impact sensor VW POLO 2011
Brand: VW
SKU: 4H0955557-1
Price: 18.00 EUR
Availability: InStock

OEM: 4H0955557-1

Disassembled car photo

Engine running

Tested before shipping
Guaranteed quality
Fast delivery 3–7 days
14-day returns

What is this part and why does it matter?

The airbag impact sensor (crash sensor) detects sudden deceleration consistent with a collision, sending a signal to the airbag control module to trigger deployment.

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Not sure about compatibility? Send us your car's VIN and we'll confirm.

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Signs of a faulty part

If you notice any of the following, the part likely needs replacement:

Airbag warning light on the dashboard
Diagnostic fault code related to a specific impact sensor
Airbag failing to deploy in a collision (discovered after the fact)

Installation information

Bolts to the bumper, door, or chassis depending on location — always follow correct safety procedures when working near the airbag system.

Donor vehicle description

VIN: WVWZZZ6RZCY032437
Make, model: VW POLO
Year: 2011
Engine: Benzīns 1.2L 44KW - CGPB
Transmission: Mehāniska - NR
Drive: Priekšēja
: Stūre kreisajā pusē
Colour: B4 / B9A

146 parts from this car

Frequently asked questions

Different sensors detect different types of collisions (frontal, side) from different locations, allowing the system to deploy the appropriate airbags for the specific type of impact.

What our customers say

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Price: affordable. Service: electrical equipment repair.
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Andris B.
September 2026
Price: excellent.
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Didier V.
August 2026
Super good! They came through with the part I needed, quickly and at a fair price! Thanks, and I definitely recommend!
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Ilmars K.
August 2026
I ordered a Heater Blower Motor Resistor for a Toyota Avensis. Delivery took eight days from Latvia to Ireland. I installed it, and everything works perfectly. I wish this company success.
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Aleksandr L.
Toyota Avensis
August 2026
No complaints about Evro Trans itself, everything's fine. But the delivery..... It felt like the order was being carried by turtles. 4 days from Riga to Daugavpils. Judging by the tracking, the parcel just sat somewhere behind a shed for 3 days, then they found it and delivered it the next day. I think that's why I won't be ordering there again.
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Paul F.
June 2026
Super fast delivery of the part, and good quality of the used part. Thanks for the service.
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Natālija I.
May 2026
I ordered antifreeze heaters and an auxiliary pump. Everything arrived quickly, the very next day, and matched the description. I'm satisfied.
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Juris J.
February 2026
Excellent service, timely delivery, and complete transparency at every step. I highly recommend EvroTrans to anyone looking for a reliable partner!
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Egor S.
November 2025
Bought a front fender for my car. I liked it! After payment they sent more than 20 photos of the problem areas, and it was packed very securely - took a while to unwrap.
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Front fender
October 2025